[C#]判断回文串；数组中最大最小值，平均值

判断回文：

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace 判断回文
{
    class Program
    {
        static void Main(string[] args)
        {
            string s = Console.ReadLine();
            int len=s.Length;
            int Flag=0;
            for (int i = 0; i < (len-1)/2; i++)
            {
                if(s[i]!=s[len-1-i])
                {
                    Flag=1;
                    break;
                }
            }
            if(Flag==1)
                Console.WriteLine("no");
            else
                Console.WriteLine("yes");
        }
    }
}

 

数组中最大最小值，平均值：

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace ConsoleApplication1
{
    class Program
    {
        static void Main(string[] args)
        {
            int[] num = { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9 };
            int max=num[0];
            int min = num[0];
            float sum=num[0];
            for(int i=1;i<num.Length;i++)
            {
                if(max<num[i])
                    max=num[i];
                if(min>num[i])
                    min=num[i];
                sum+=num[i];
            }
            float average = sum  / num.Length;
            Console.WriteLine("最大值为{0}", max);
            Console.WriteLine("最小值为{0}", min);
            Console.WriteLine("平均值为{0}", average);
        }
    }
}